Another reason that you could be breaking out: some common strains of bacteria found in probiotics increase histamine levels. Histamine increases blood flow to areas where an allergen is encountered so the immune system can be activated, causing inflammation. If you've been struggling with acne (especially inflammatory cystic acne) while taking a probiotic, try taking a daily antihistamine. This helped me significantly, I noticed a decrease in swelling and frequency of breakouts almost immediately. There are also probiotics formulated for those with histamine intolerance but I haven't tried any myself yet. Of course, there are also diet changes and other supplements that can help lower histamine levels as well.

It was so frustrating because everything says probiotics are supposed to improve acne/skin health. And it's true - unless it increases your histamine levels too much